package ch03;

import java.util.Random;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class CountDownLatchDemo implements Runnable {
    static final CountDownLatch end = new CountDownLatch(10);
    static final CountDownLatchDemo demo = new CountDownLatchDemo();
    @Override
    public void run() {
        try {
            Thread.sleep(new Random().nextInt(10) * 1000);
            System.out.println("check complet");
            end.countDown();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }




    }

    public static void main(String[] args) throws InterruptedException {
        ExecutorService exec = Executors.newFixedThreadPool(10);
        for (int i = 10; i > 0; i--) {
            exec.submit(demo);
        }

        end.await();
        System.out.println("Fire!");

    }
}
